Sauter EY-modulo 5 ecos 5 ecos505 up to 3.1.x Webserver API reliance on file name or extension of externally-supplied file

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Sauter Modulo 6 Devices modu680-AS, Modulo 6 Devices modu660-AS, Modulo 6 Devices modu612-LC, EY-modulo 5 modu 5 modu524, EY-modulo 5 modu 5 modu525, EY-modulo 5 ecos 5 ecos504 and EY-modulo 5 ecos 5 ecos505 up to 3.1.x. This affects an unknown function of the component Webserver API. This manipulation causes reliance on file name or extension of externally-supplied file. This vulnerability appears as CVE-2025-41720. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Sauter Modulo 6 Devices modu680-AS, Modulo 6 Devices modu660-AS, Modulo 6 Devices modu612-LC, EY-modulo 5 modu 5 modu524, EY-modulo 5 modu 5 modu525, EY-modulo 5 ecos 5 ecos504 and EY-modulo 5 ecos 5 ecos505 up to 3.1.x. Affected by this vulnerability is some unknown processing of the component Webserver API. The manipulation with an unknown input leads to a reliance on file name or extension of externally-supplied file vulnerability. The CWE definition for the vulnerability is CWE-646. The product allows a file to be uploaded, but it relies on the file name or extension of the file to determine the appropriate behaviors. This could be used by attackers to cause the file to be misclassified and processed in a dangerous fashion. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A low privileged remote attacker can upload arbitrary data masked as a png file to the affected device using the webserver API because only the file extension is verified.

The weakness was presented by Damian Pfammatter and Daniel Hulliger as vde-2025-060. The advisory is shared at sauter.csaf-tp.certvde.com. This vulnerability is known as CVE-2025-41720 since 04/16/2025. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-35333). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (CERTVDE): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reliance on file name or extension of externally-supplied file
CWE: CWE-646
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Modulo 6 Devices modu680-AS/Modulo 6 Devices modu660-AS/Modulo 6 Devices modu612-LC/EY-modulo 5 modu 5 modu524/EY-modulo 5 modu 5 modu525/EY-modulo 5 ecos 5 ecos504/EY-modulo 5 ecos 5 ecos505 3.2.0

Timelineinfo

04/16/2025 CVE reserved
10/22/2025 +189 days Advisory disclosed
10/22/2025 +0 days VulDB entry created
10/22/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: vde-2025-060
Researcher: Damian Pfammatter, Daniel Hulliger
Status: Confirmed

CVE: CVE-2025-41720 (🔒)
GCVE (CVE): GCVE-0-2025-41720
GCVE (VulDB): GCVE-100-329293
EUVD: 🔒

Entryinfo

Created: 10/22/2025 09:33
Updated: 10/22/2025 14:15
Changes: 10/22/2025 09:33 (65), 10/22/2025 14:15 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!